package demo16;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int count = 0;
        for (int i = 1; i < n; i++) {
            int sum = 0;
            for (int j = 1; j < i; j++) {
                if(i % j == 0) {
                    sum += j;
                }
            }
            if(sum == i) {
                count++;
            }

        }
        System.out.println(count);

    }

}
